@ClaudeDevs: Fast mode now defaults to Opus 4.7 in Claude Code. Try it out today with /fast
Summary
Fast mode in Claude Code now defaults to Opus 4.7; users can try it with the /fast command.
View Cached Full Text
Cached at: 05/20/26, 04:25 AM
Fast mode now defaults to Opus 4.7 in Claude Code.
Try it out today with /fast https://t.co/i0roMdEgEg
Similar Articles
Fast mode for Claude Opus 4.7 (2 minute read)
Fast mode for Claude Opus 4.7 is now available in research preview, offering faster responses. It is currently opt-in but will become the default.
@rohanpaul_ai: Fast mode for Claude Opus 4.8 is roughly 2.5x the speed while being 3X cheaper than before. AI/ML API (@aimlapi) alread…
Claude Opus 4.8 now has a fast mode that is 2.5x faster and 3x cheaper, integrated on AI/ML API with free access for selected users.
The new Claude has a fast mode that's now 3x cheaper. It's perfect for the one thing I use AI for most: generating options to choose from.
The new Claude Opus 4.8 introduces a fast mode that is 3x cheaper and 2.5x faster, ideal for generating multiple options quickly. The article shares prompts and strategies for using this mode to overcome writer's block.
@bcherny: People often ask what my biggest tip is for getting the most out of Claude Code. These days my #1 tip is: use auto mode…
Boris Cherny recommends using auto mode in Claude Code for parallel sessions, and ClaudeDevs announces that auto mode is now available on the Pro plan and supports Sonnet 4.6 and Opus 4.7.
Changes in the system prompt between Claude Opus 4.6 and 4.7
Anthropic released Claude Opus 4.7 with notable system prompt changes including expanded child safety instructions, new tool integrations (Claude in PowerPoint, Chrome, Excel), and behavioral adjustments to reduce verbosity and improve task completion without unnecessary clarification.